I'm beginner at IOS. I don't quite understand what is difference between collection view and collecionviewcontroller and in what cases can I use each of them
original source :Β https://stackoverflow.com/questions/29773787/collectionview-controller-vs-collectionview
UICollectionViewController μ UICollectionView μ μ°¨μ΄μ
UICollectionView inherits from UIScrollView (just another UIView)
UICollectionViewController inherits from UIViewController.. and it implements some protocols.. like UICollectionViewDelegate and UICollectionViewDataSource .. it means everything is already done for you.. and you just have to use it.. but as everything is already done for you.. you may not be able to do some stuff.. like resizing your collectionView ..
if you want full control I recommend you to use your own UIViewController.. and add a UICollectionView as a subview.. so you can place it wherever you want and resize it.. don't forget to implement UICollectionView protocols for delegation and datasource :)